In the much-anticipated exhibition “Dan Fiavin: A Retrospective,” with 46 objects and installations and 110 works on paper and collage constructions, there are plenry of glowing geometries to support Flavin’s srarus in the Minimalist pantheon, alongside Donald Judd, Sol LeWitt, and Carl Andre, and a stellar cast of experts to make the argument:…see the full feature in June’s magazine.